Inciso 3

Column

Estadísticas descriptivas

Data summary
Name select(ecommerce, -c(Emai…
Number of rows 500
Number of columns 5
_______________________
Column type frequency:
numeric 5
________________________
Group variables None

Variable type: numeric

skim_variable n_missing complete_rate mean sd p0 p25 p50 p75 p100 hist
AvgSessionLength 0 1 33.05 0.99 29.53 32.34 33.08 33.71 36.14 ▁▃▇▆▁
TimeonApp 0 1 12.05 0.99 8.51 11.39 11.98 12.75 15.13 ▁▃▇▅▁
TimeonWebsite 0 1 37.06 1.01 33.91 36.35 37.07 37.72 40.01 ▁▃▇▅▁
LengthofMembership 0 1 3.53 1.00 0.27 2.93 3.53 4.13 6.92 ▁▃▇▃▁
YearlyAmountSpent 0 1 499.31 79.31 256.67 445.04 498.89 549.31 765.52 ▁▅▇▃▁
  AvgSessionLength          TimeonApp      TimeonWebsite LengthofMembership 
          1.370163           1.365696           1.367175           1.196052 
 YearlyAmountSpent 
        104.275551 
  AvgSessionLength          TimeonApp      TimeonWebsite LengthofMembership 
          6.607234           6.618842           6.091334           6.652788 
 YearlyAmountSpent 
        508.847880 
# A tibble: 5 × 3
  Variables          Asimetria Curtosis
  <chr>                  <dbl>    <dbl>
1 AvgSessionLength     -0.0321     3.00
2 TimeonApp            -0.0889     3.11
3 TimeonWebsite         0.0121     2.89
4 LengthofMembership   -0.106      3.33
5 YearlyAmountSpent     0.0347     3.45

Column

Interpretación estadísticas descriptivas

AvgSessionLength

TimeonApp

TimeonWebsite

LengthofMembership

YearlyAmountSpent

Inciso 4

Column

Gráficos univariados

Gráficos bivariados con “Yearly Amount Spent”

Column

Interpretación gráficos univariados

Interpretación gráficos bivariados

Inciso 5

Column

Gráfico de “AvgSessionGroup”

Descripción de “AvgSessionGroup”

Column

Interpretación estadísticas descriptivas y gráfico de “AvgSessionGroup”

Inciso 6

Column

Boxplot de la variable “Yearly Amount Spentr” por categoría

Column

Interpretación del Boxplot de la variable “Yearly Amount Spentr”

Inciso 7

Column

Matriz de las correlaciones

Gráficos bivariados con “Yearly Amount Spent”

Column

Columna Interpretación

Inciso 7B

Column

Matriz de las correlaciones

Heatmap de correlación

Inciso 7C

Column

Matriz de las correlaciones

Gráficos bivariados con “Yearly Amount Spent”

Column

Columna Interpretación

Inciso 8

Column

summary(modelo) - R2.train & R2.valid


Call:
lm(formula = YearlyAmountSpent ~ AvgSessionLength + TimeonApp + 
    TimeonWebsite + LengthofMembership, data = aux1, subset = train)

Residuals:
     Min       1Q   Median       3Q      Max 
-30.2617  -6.3368  -0.3456   6.8310  30.1189 

Coefficients:
                     Estimate Std. Error t value Pr(>|t|)    
(Intercept)        -1044.0993    24.9478 -41.851   <2e-16 ***
AvgSessionLength      25.5468     0.4951  51.595   <2e-16 ***
TimeonApp             38.9498     0.5073  76.775   <2e-16 ***
TimeonWebsite          0.3445     0.4871   0.707     0.48    
LengthofMembership    61.3558     0.5000 122.719   <2e-16 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 9.922 on 395 degrees of freedom
Multiple R-squared:  0.9839,    Adjusted R-squared:  0.9837 
F-statistic:  6034 on 4 and 395 DF,  p-value: < 2.2e-16
[1] 0.9838982
[1] 0.9851772

Column

Ajuste en ambas muestras